graphene:box-expand-scalar (box scalar result)

box -- a graphene:box-t instance to expand
scalar -- a number coerced to a float with the scalar value
result -- a graphene:box-t instance for the result

The graphene:box-t instance with the result.

Expands the dimensions of box by the given scalar value. If the scalar argument is positive, the box will grow. If the scalar argument is negative, the box will shrink.